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| author | Kevin Winchester <kjwinchester@gmail.com> | 2010-08-09 17:20:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-09 20:45:05 -0700 |
| commit | 85c9fe8fcaf630225b26047b3a7cc5167739eced (patch) | |
| tree | 7af001a80ea43c22411f80cd35bd4aceae60e6aa /fs/readdir.c | |
| parent | d89b1945b760a6e0e887da004d68432c0bff899a (diff) | |
| download | lwn-85c9fe8fcaf630225b26047b3a7cc5167739eced.tar.gz lwn-85c9fe8fcaf630225b26047b3a7cc5167739eced.zip | |
vfs: fix warning: 'dirent' is used uninitialized in this function
Using:
gcc (GCC) 4.5.0 20100610 (prerelease)
The following warnings appear:
fs/readdir.c: In function `filldir64':
fs/readdir.c:240:15: warning: `dirent' is used uninitialized in this function
fs/readdir.c: In function `filldir':
fs/readdir.c:155:15: warning: `dirent' is used uninitialized in this function
fs/compat.c: In function `compat_filldir64':
fs/compat.c:1071:11: warning: `dirent' is used uninitialized in this function
fs/compat.c: In function `compat_filldir':
fs/compat.c:984:15: warning: `dirent' is used uninitialized in this function
The warnings are related to the use of the NAME_OFFSET() macro. Luckily,
it appears as though the standard offsetof() macro is what is being
implemented by NAME_OFFSET(), thus we can fix the warning and use a more
standard code construct at the same time.
Signed-off-by: Kevin Winchester <kjwinchester@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/readdir.c')
| -rw-r--r-- | fs/readdir.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/readdir.c b/fs/readdir.c index 7723401f8d8b..356f71528ad6 100644 --- a/fs/readdir.c +++ b/fs/readdir.c @@ -4,6 +4,7 @@ * Copyright (C) 1995 Linus Torvalds */ +#include <linux/stddef.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/time.h> @@ -54,7 +55,6 @@ EXPORT_SYMBOL(vfs_readdir); * anyway. Thus the special "fillonedir()" function for that * case (the low-level handlers don't need to care about this). */ -#define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de))) #ifdef __ARCH_WANT_OLD_READDIR @@ -152,7 +152,8 @@ static int filldir(void * __buf, const char * name, int namlen, loff_t offset, struct linux_dirent __user * dirent; struct getdents_callback * buf = (struct getdents_callback *) __buf; unsigned long d_ino; - int reclen = ALIGN(NAME_OFFSET(dirent) + namlen + 2, sizeof(long)); + int reclen = ALIGN(offsetof(struct linux_dirent, d_name) + namlen + 2, + sizeof(long)); buf->error = -EINVAL; /* only used if we fail.. */ if (reclen > buf->count) @@ -237,7 +238,8 @@ static int filldir64(void * __buf, const char * name, int namlen, loff_t offset, { struct linux_dirent64 __user *dirent; struct getdents_callback64 * buf = (struct getdents_callback64 *) __buf; - int reclen = ALIGN(NAME_OFFSET(dirent) + namlen + 1, sizeof(u64)); + int reclen = ALIGN(offsetof(struct linux_dirent64, d_name) + namlen + 1, + sizeof(u64)); buf->error = -EINVAL; /* only used if we fail.. */ if (reclen > buf->count) |